condition mean min max ZT0-3 0.41159725 0.327959 0.4952355 ZT4-7 0.275873 0.275873 0.275873 ZT8-11 0.5815095 0.5815095 0.5815095 ZT12-15 0 0 0 ZT16-19 0.6200825000000001 0.6200825000000001 0.6200825000000001 ZT20-23 0.547838 0.547838 0.547838